Colorado Esthetician Written Practice Exam

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Study for the Colorado Esthetician Written Exam. Prepare with flashcards and multiple-choice questions, each with hints and explanations. Get ready for your esthetician license!

Practice this question and more.

Which current is constant and direct, involving a positive and negative pole, and produces chemical changes?

Alternating current
Direct current
Galvanic current
High-frequency current

The correct answer is: Alternating current

The correct answer is C. Galvanic current. Galvanic current is a type of direct current that involves a positive and negative pole and produces chemical changes in the skin. This current is commonly used in esthetic treatments to help penetrate products deeper into the skin and produce certain chemical effects such as desincrustation and iontophoresis. Option A, Alternating current, involves a current that periodically reverses direction, unlike the constant direction of galvanic current. Option B, Direct current, is a close choice but does not specifically mention the positive and negative poles involved in galvanic current. Option D, High-frequency current, is a different type of current that is known for its thermal and germicidal effects rather than producing chemical changes like galvanic current.